Oracle8i Reference
Release 2 (8.1.6)

A76961-01

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Oracle Enqueue Names

This appendix lists Oracle enqueues. Enqueues are shared memory structures (locks) that serialize access to database resources. They can be associated with a session or transaction. Enqueue names are displayed in the LOCK_TYPE column of the DBA_LOCKS and DBA_LOCK_INTERNAL data dictionary views.

A resource uniquely identifies an object that can be locked by different sessions within an instance (local resource) or between instances (global resource). Each session that tries to lock the resource will have an enqueue on the resource.


Note:

The names of enqueues and their definitions may change from release to release. 


See Also:

 

The Oracle enqueues are:


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